Complete the indicated task to unlock the achievement.

Achievement	How to unlock
Beginner	Build your first bridge.
Absolute failure	Destroy your first bridge.
Excellent	Complete the level of three stars.
Civilian agency	Build all the bridges in the city.
Village bridge-builders	Build all the bridges in the suburbs.
Forest Master	Build all the bridges in the forest.
Hot building	Build all the bridges in the desert.
Construction has only begun	Earn 30 stars.
The Golden Mean	Earn 60 stars.
Bridge expert	Earn 90 stars.
First-rate engineer	Earn 120 stars.
Around the world	Complete all levels.
Begin at the beginning	Start the level again to improve your result.